Per Infortunium Definition: Latin: by misadventure. A term used in the ancient common law describe what is now known as a form of excusable homicide; that which occurs by misadventure; by accident (the other being the death of another caused in self-defence) REFERENCES Duhaime, Lloyd, Legal Definition of Excusable Homicide Categories & Topics: Ancient Common Law Dictionary Criminal Law Dictionary Dictionary of Latin Law Terms Find you are constantly looking up definitions? Try our search provider (works in most modern browsers) If you find an error or omission in Duhaime's Legal Dictionary, or if you have legal term suggestion, we'd love to hear from you!